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Individual charging: This test was simple we inserted a single battery into each charger and waited to see if it began to charge.Price less than $50: We ruled out any models costing more than $50 because we know from past research and testing that you can get a good charger for much less.This helps us gauge if the company makes high-quality products, if it will be able to keep items in stock, and if it has a dedicated customer-support team. We also perused the company’s website, read user reviews and ratings, and (when applicable) ran the Amazon listing through Fakespot to confirm it was a reliable seller. Good reputation: We considered whether we had heard of the company or tested its products in the past.Informative interface: We required that every model have some kind of indicator (either a display screen or lights) to signal when the batteries were charging and fully charged.(You should still take your batteries out of the charger within a day of charging them, though.)
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NiMH (nickel metal hydride) compatibility: We made sure the charger was compatible with NiMH batteries, which have the latest technology and are the most common AA batteries-NiCd (nickel cadmium), lithium, lead, and zinc rechargeable batteries are far less common.